There are four distinct types of galaxies in the universe, elliptical, spiral, barred spiral, and irregular. Although these are the four main types, there are various types of galaxies and the way in which they are classified is by their shape. A galaxy is a cluster of stars, gas, and dust that are kept together...

Beautiful 'Black Hole Explained' Poster Print by PabloCarlosBudassi ✓ Printed on Metal ✓ Easy Magnet Mounting ✓ Worldwide Shipping. Buy online at DISPLATE.

xii, 345 p. 20 cm